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Again, for some odd reason, people...

Apr2211 05:26 AM
ZapperZ

1 
47,900 
We can easily calculate that 89.5% of an iceberg is submerged. Yet occasionally icebergs turn over with possibly...

Oct2011 09:35 AM
xts

1 
1,586 
Let's say you have 2 identical springs
Let's say lenght = 1m
Spring constant = 0.5
You attach each spring to...

Oct2011 09:31 AM
anigeo

3 
1,097 
Imagine an Aeroplane held above the earth's surface for 12 hours, having no contact with the surface of the earth....

Oct2011 09:27 AM
Lsos

9 
3,421 
a capacitor does not work on dc as time varying current is required for it to function then why does it work on dc...

Oct2011 09:01 AM
Delta˛

1 
940 
Hey guys, I have been having trouble trying to reason out in relation to real life application.
Problem:
Two...

Oct2011 05:13 AM
Lsos

7 
1,768 
Hey guys, first post here...
So, I'm having an issue comprehending this topic:
Let's say you have a box which weighs...

Oct2011 05:06 AM
Lsos

7 
1,432 
If we are given B, how can we find A? I can fine the magnitude of A by:
\int_{s'} \vec B \cdot d\vec{s'} = ...

Oct2011 03:33 AM
vanhees71

24 
10,989 
Hi,
I'm taking a thermodynamics class and am curious about how changes in volume of a gas affect temperature.
I...

Oct1911 09:39 PM
Andrew Mason

7 
1,501 
My friends and I were curious as to what the best angle was to blow on coffee to cool it down (actually only the...

Oct1911 08:20 PM
elegysix

12 
2,062 
what would be some sources of error in a lab to find the refractive index of a prism? This lab was done by use of...

Oct1911 06:33 PM
JeffKoch

1 
1,553 
A definition for the normal in reflection and refraction?

Oct1911 04:46 PM
grzz

2 
7,567 
Hello,
I am currently studying transformer design, in particular cooling methods.
I am tyring to calculate the...

Oct1911 03:09 PM
LowQ

2 
3,474 
I was wondering how mesons are accounted for in mass defect. I saw a video on youtube where binding energy was...

Oct1911 01:08 PM
spectragal

0 
922 
I have a bicycle frame. I want to analyze this frame as a spring mass system.
What details i should know. I should...

Oct1911 08:42 AM
joslopher

7 
3,457 
I recently learned how to calculate the field from a cylinder (inside and outside the cylinder) using Gauss's law. I...

Oct1911 04:05 AM
vanhees71

4 
1,305 
I am trying to understand the nature of the dependence of heat capacity/specific heat on pressure.
I understand...

Oct1911 02:30 AM
Hypatio

2 
2,926 
Hello, suppose we have a some phenomenon let's say Simple Harmonic Generation in nonlinear physics. Then we start with...

Oct1911 12:34 AM
vivek.iitd

0 
731 
Hello,
Say I have two concentric conducting rings, where r1 >> r2 (why is this important, btw?),
and I run a time...

Oct1811 03:45 PM
dudy

4 
928 
Think about it. If space was a vacuum how would energy from the sun (which has a mass equivalency) be radiated....

Oct1811 03:00 PM
Naty1

17 
3,829 
I've been reading Mechanics of Landau Lifgarbagez. They state that "not all integrals of motion are of equal...

Oct1811 02:44 PM
QuArK21343

1 
853 
Suppose we have an object that at the infinity has inductance L.Afther that we aprouch it to an object that has the...

Oct1811 02:29 PM
alex.rechilie

0 
598 
Suppose you have a ferromagnet with relative magnetic permeability μ.And it is sittuated in a magnetic field B.
What...

Oct1811 12:33 PM
alex.rechilie

0 
760 
How is that when:
A wagon collides with the velocity (v) with another wagon (at rest, v=0) of the same mass (m) on...

Oct1811 12:10 PM
RobinSky

8 
1,460 
Hi all, if I have the velocities and rotations of an object with respect to a moving frame.
Are there relations that...

Oct1811 10:55 AM
chrisbaird

3 
2,003 
hey guys can anyone pls say how much current in amps does a ordinary car battery of 12v generates?? pls......

Oct1811 09:50 AM
JeffKoch

14 
1,612 
Consider a brickshaped ferromagnetic of relative magnetic permeability µ >> 1, which has dimensions 2a × 2a × a and a...

Oct1811 08:23 AM
alex.rechilie

0 
807 
Hi everyone,
I have a problem that I hope someone can help me with, the question is.
A mass of 500kg induces a...

Oct1811 08:13 AM
Rastanking

0 
590 
Hi,
I'm having some trouble about the calculation of saros cycle in example 13.9 of Greiner's book "classical...

Oct1811 04:26 AM
babylonia

0 
560 
Hi,
I don't understand what the offdiagonal terms in the moment of inertia (tensor) matrix are intuitively....they...

Oct1711 06:03 PM
TGlad

11 
3,363 
Hi everyone,
Well everything is in the title. Answers are not clear on the net and I cannot figure it out myself.

Oct1711 05:56 PM
atyy

7 
1,875 
For a process at constant pressure, ΔH=q.
My textbook clearly says that the only way that enthalpy can change is...

Oct1711 05:50 PM
Andrew Mason

9 
12,311 
So, in a physics lab I TA, we are doing a lab in which part of it, the students try to do Faraday's Ice Pail...

Oct1711 02:49 PM
elegysix

10 
1,923 
Hi,
first sorry for my bad English, I am more skilled to read than to write in English
I don't know if this is the...

Oct1711 02:40 PM
elegysix

3 
1,255 
This is related to Goldstein Exercise 328. It is not really a homework problem anymore because I have solved them....

Oct1711 02:35 PM
yenchin

1 
1,599 
For electrostatics, I know that conductors have 0 electric field inside. And I know that the surface of a spherical...

Oct1711 01:15 PM
chrisbaird

1 
1,224 
I was looking at some sliding doors and thinking/reviewing about the concept of work.
So I have a few questions
...

Oct1711 12:18 PM
chrisbaird

5 
1,245 
I am a bit confused about a statement I read in my textbook saying the sum of external forces on a body is equal to...

Oct1711 12:15 PM
freemovement

11 
2,181 
Hey, all!
Browsing around the library for some mechanics books, I happened to come across Manuel Prieto Alberca's...

Oct1711 12:07 PM
Metaleer

11 
1,533 
Hello everybody, I have a question about the Fresnel equations at normal incidence. My textbook gives the reflection...

Oct1711 11:19 AM
brianpile

5 
3,392 
Hello
I have found in some text books that the magnetic scalar potential is continuous across a boundary. Now, how...

Oct1711 07:37 AM
baggiano

2 
1,581 